Costa, D. G. (2007). An Invitation to Variational Methods in Differential Equations (1st ed. 2007.). Birkhäuser Boston : Imprint: Birkhäuser.
Style de citation Chicago (17e éd.)Costa, David G. An Invitation to Variational Methods in Differential Equations. 1st ed. 2007. Boston, MA: Birkhäuser Boston : Imprint: Birkhäuser, 2007.
Style de citation MLA (8e éd.)Costa, David G. An Invitation to Variational Methods in Differential Equations. 1st ed. 2007. Birkhäuser Boston : Imprint: Birkhäuser, 2007.
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